Table 1 Range, mean and standard deviation (SD) of refractions and parameters measured with IOLMaster such as axial length (AL), mean keratometry (KM), anterior chamber depth (ACD) before refractive surgery and at 6 months follow up

Age (years)

From 18 to 57

31.53 ± 8.47

Before myopic PRK

 Refraction (D)

From − 9.5 to − 1

− 4.55 ± 2.2

 Axial length (mm)

From 21.86 to 30.42

25.46 ± 1.22

 Mean keratometry (D)

From 37.73 to 47.85

43.88 ± 1.48

 Anterior chamber depth (mm)

From 2.09 to 4.4

3.66 ± 0.31

6 months after myopic PRK

 Refraction (D)

From − 2 to + 2

+ 0.41 ± 0.5

 Axial length (mm)

From 21.87 to 30.31

25.35 ± 1.19

 Mean keratometry (D)

From 31.69 to 45.43

39.42 ± 2.34

 Anterior chamber depth (mm)

From 2.18 to 4.29

3.56 ± 0.3